Could you please let me know what version (build) of Acronis program you use? Also please clarify: did you create Acronis Secure Zone or not? Please note that Acronis Secure Zone creation is absolutely automatically after you set the place where you want to create it and its size, it is a special, hidden system partition for storing the image files. Ordinary applications can’t access it, for image security purposes. If you create an image on the same disk (partition), we recommend you to store an image in the Acronis Secure Zone.

Please describe your second problem with invalid script file in details. Does this problem appear when you run the schedule task?